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Pouring system and method of oil cylinder

A pouring system and oil cylinder technology, which is applied in casting molding equipment, molds, cores, etc., can solve the problems of unreasonable design of gating system and poor casting quality, so as to improve the complete pass rate, high yield and good stability. Effect

Pending Publication Date: 2020-01-10
ANQING CSSC DIESEL ENGINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is: how to solve the problem of poor casting quality caused by the unreasonable design of the pouring system in the existing process

Method used

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  • Pouring system and method of oil cylinder
  • Pouring system and method of oil cylinder
  • Pouring system and method of oil cylinder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 2 As shown, the gating system of the oil cylinder includes a casting sand mold body, a cavity is provided in the casting sand mold body, and a casting body 7 is inside the cavity, and the casting runner includes a first sprue 1 and a second sprue 2 connected in sequence , the filter chamber 3, the first runner 4, the second runner 5, the annular inner runner 6; the first sprue 1 and the second sprue 2 are connected by a buffer pipeline, and the second sprue 2 and the filter chamber 3 are connected by a buffer pipeline, the two ends of the first runner 4 are respectively connected to the filter chamber 3 and the second runner 5, and the upper part of the second runner 5 is an annular inner runner 6, so The annular inner runner 6 is located at the bottom of the cavity and communicates with the cavity.

[0039] In this embodiment, because the main body of the oil cylinder is cylindrical with a large wall thickness, in order to prevent the uneven quality of...

Embodiment 2

[0043] Such as image 3 As shown, this implementation is based on the above embodiment. In this embodiment, the filter chamber 3 includes a rectangular cavity. The upper end of the cavity communicates with the buffer pipe at the bottom of the second sprue 2. The side of the cavity is provided A small cavity, one side of the small cavity communicates with the cavity, and a filter 31 is provided at the junction, and the other side of the small cavity communicates with the first runner 4. In this embodiment, the filter chamber 3 There are two outlets, which are respectively one side of two small cavities, and the two small cavities are respectively connected to two first runners 4, and the outlets of the two first runners 4 are connected to the second runner 5. When pouring, the first runner 4 can enter the second runner 5 from two inlets, and the second runner 5 is preferably arranged symmetrically. In this embodiment, the filter 31 is a foam ceramic filter. The first Runner 4 ...

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Abstract

The invention discloses a pouring system of an oil cylinder. The pouring system of the oil cylinder comprises a casting sand mold body, wherein a mold cavity is formed in the casting sand mold body, acasting runner comprises a first straight runner, a second straight runner, a filter chamber, a first cross runner, a second cross runner and an annular inner runner, the first straight runner and the second straight runner are connected through a buffer pipeline, the second straight runner and the filter chamber are connected through the buffer pipeline, two ends of the first cross runner are respectively connected with the filter chamber and the second cross runner, the annular inner runner is formed in the top of the second cross runner, and the annular inner runner is located at the bottom of the mold cavity, and communicates with the mold cavity. The invention further discloses a method using the pouring system of the oil cylinder. The pouring system of the oil cylinder has the beneficial effects of being simple in structure, high in yield and good in stability by designing the buffer structure, the filter chamber and the annular inner runner, effectively reducing the quantity ofshrinkage porosity, air hole and slag hole defects of oil cylinder castings, reducing quality loss, and greatly improving complete qualified rate of the castings.

Description

technical field [0001] The invention relates to a gating system and method, in particular to a gating system and method for an oil cylinder. Background technique [0002] As a key part of the marine steering gear that converts hydraulic energy into mechanical energy, the hydraulic cylinder is in a high-pressure working state (working internal pressure is 27.0-35.0MPa, and the bottom is subjected to rudder angle thrust as high as 40.5MPa), so its cylinder castings must have sufficient structure Density, impact resistance, toughness, etc. After desanding treatment, the cylinder castings need to carry out EN 12680-33 level UT flaw detection, and the joint parts of the main body and flanges, bottom plates, reinforcements, etc. should be inspected by MT or PT. The process of obtaining high-quality castings has become more difficult. [0003] Such as figure 1 As shown, the existing process is: [0004] 1) Since the main body of the oil cylinder is cylindrical with a relatively...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22C9/22
CPCB22C9/082B22C9/086B22C9/22
Inventor 李伟黄禄丰陈涛
Owner ANQING CSSC DIESEL ENGINE